Key Laboratory of Exploration Technologies for Oil and Gas Resources (Yangtze University), Ministry of Education, Wuhan, Hubei, China.
Department of Petroleum Engineering, Leak Resistance & Sealing Technology Research Department National Engineering Laboratory of Petroleum Drilling Technology, Yangtze University, Wuhan, Hubei, China.
PLoS One. 2022 Jul 22;17(7):e0271761. doi: 10.1371/journal.pone.0271761. eCollection 2022.
In nature, biomineralization is a common phenomenon, which can be further divided into authigenic and artificially induced mineralization. In recent years, artificially induced mineralization technology has been gradually extended to major engineering fields. Therefore, by elaborating the reaction mechanism and bacteria of mineralization process, and summarized various molecular dynamics equations involved in the mineralization process, including microbial and nutrient transport equations, microbial adsorption equations, growth equations, urea hydrolysis equations, and precipitation equations. Because of the environmental adaptation stage of microorganisms in sandy soil, their reaction rate in sandy soil environment is slower than that in solution environment, the influencing factors are more different, in general, including substrate concentration, temperature, pH, particle size and grouting method. Based on the characteristics of microbial mineralization such as strong cementation ability, fast, efficient, and easy to control, there are good prospects for application in sandy soil curing, building improvement, heavy metal fixation, oil reservoir dissection, and CO2 capture. Finally, it is discussed and summarized the problems and future development directions on the road of commercialization of microbial induced calcium carbonate precipitation technology from laboratory to field application.
在自然界中，生物矿化是一种常见的现象，可进一步分为自生矿化和人为诱导矿化。近年来，人为诱导矿化技术逐渐扩展到主要工程领域。因此，通过阐述矿化过程的反应机制和细菌，并总结了矿化过程中涉及的各种分子动力学方程，包括微生物和养分传输方程、微生物吸附方程、生长方程、尿素水解方程和沉淀方程。由于微生物在沙土中的环境适应阶段，它们在沙土环境中的反应速率比在溶液环境中慢，影响因素也更多不同，一般包括基质浓度、温度、pH 值、粒径和注浆方法。基于微生物矿化的特点，如强固着能力、快速、高效、易于控制等，在沙土固化、建筑物改良、重金属固定、油藏分割和 CO2 捕集等方面具有很好的应用前景。最后，从实验室到现场应用，讨论和总结了微生物诱导碳酸钙沉淀技术在商业化道路上面临的问题和未来发展方向。
